Keyboard device

A keyboard device located in an accommodating space of a housing, wherein the housing has a plurality of first openings and a second opening, and the first and second openings are communicated with the accommodating space, and the keyboard device comprises:

• a flexible body located in the accommodating space and comprising:
• a main body;
• a plurality of first pressing portions protruding from h main body and respectively located in the first openings;
• a plurality of patterns located on a surface of the main body or surfaces of the first pressing portions, wherein the patterns are respectively exposed through the first openings;
• and
• a second pressing portion protruding from the main body and located in the second opening, wherein the main body, and the first and second pressing portions have an enclosure space therein, such that the main body, and the first and second pressing portions are communicated with each other;
• and
• a transparent liquid located in the enclosure space, wherein when the second pressing portion is pressed, the first pressing portions expand to protrude from the first openings due to the transparent liquid flowing into the first pressing portions, such that the patterns are enlarged.